diff --git a/system/core/Base4.php b/system/core/Base4.php
index 2447483..bd04341 100644
--- a/system/core/Base4.php
+++ b/system/core/Base4.php
@@ -31,7 +31,8 @@
  *
  * Since PHP 5 doesn't suffer from this problem so we load one of
  * two files based on the version of PHP being run.
- *
+ * @PHP4
+ * 
  * @package		CodeIgniter
  * @subpackage	codeigniter
  * @category	front-controller
diff --git a/system/core/Base5.php b/system/core/Base5.php
index 86e3513..6f2fbda 100644
--- a/system/core/Base5.php
+++ b/system/core/Base5.php
@@ -22,7 +22,8 @@
  * This file contains some code used only when CodeIgniter is being
  * run under PHP 5.  It allows us to manage the CI super object more
  * gracefully than what is possible with PHP 4.
- *
+ * @PHP4 (no need for separate Bases after PHP 4 is gone)
+ * 
  * @package		CodeIgniter
  * @subpackage	codeigniter
  * @category	front-controller